I like the （第五）lesson best because there is a beautiful poem in it.
"Sky eye" has （改变）from "China's eye" to "the world's eye".
People can learn something from collecting （邮票）and each Small picture tells us a story.
We am not （独自）on the Great Way and the whole world is one family.
You'd better not leave your exact （地址） online unless it's an official website．